Off-Road, haven’t used them, wouldn’t use them. On road, have used them, wouldn’t use them again.
Tubolito’s are the electric car of the inner tube world…..range anxiety when needed for a long ride home.
Bought two, first one I didnt need for ages, was out of the box and stuffed into my jersey pocket every ride (maybe 6 months) – this one didnt hold air for more than a few moments when it went on the wheel. Went straight in the bin when I evetually got home. Second one was ok (ish), wouldn’t hold air for the duration of a long ride – but I’ve had the odd latex innertube do the same.
I carry a Michelin Air Comp Latex, I think it was about 120 grams, so a fair bit heavier – but they’re worth it. I also have a selection of Continental Supersonic, about 50 grams I think, but regarded as being fairly delicate.
Not tried these personally, but if I was stil racing and wanted to keep the weight down I’d try these….
https://www.merlincycles.com/schwalbe-sv20-x-light-presta-tube-700c-78554.html